Composition of soap paste



\ same is deleterious.

Patented Apr. 16, 1929.

UNITED STATES PATENT OFFICE.

JOHN MORRIS WEISS, on NEW YORK, AND CHARLES RAYMOND Downs, or YoNKERs,

NEW vonx, ASSIGNORS T0 WEISS AND DOWNS, INC., or NEW YORK, N. Y., A oon- PORA'I'I ON OF NEW YORK.

,No Drawing.

soap paste or cream that removes grease, oil,

tar dyes or other stains by solution and emul-' sification, with or without the assistance of abrasive or eroding materials of varying degrees of coarseness.

A further object is to provide a'soap paste or cream that, inaddition to its cleansin action,- can be made'antiseptic forthe sterili zation of wounds, making it desirable for use by mechanics and others who frequently receive minor injuries.

Further objects will appear on reading the specification.

Soap pastes, in general use, ordinarily contain an abrasive or rough, coarse substance, to loosen the dirt, tarry or oily matters by attrition, and it is frequently neces-,

,sary to first apply gasolene or other solvents to the dirt or tar, etc. before applying the soap paste, in order to successfully cleanse the hands. The presenceof the abrasive or coarse matter ;is objectionable in that it is unpleas 1 ant to tender skin. It also tends to cause infection of minor wounds, such as cuts,

scratches, bruises, etc. frequently experienced,

by mechanics andother workmen. Such soap pastes are not adaptable to the removal of tar and oil from automobile coach work be cause they do not dissolve the latter from the painted surfaces, and the abrasive materials which are present destroy the finish.

They, moreover, cannot be used to cleanse oily or greasy polished'metal or glass surfaces whenever their eroding effect on the They are, in fact, re-' stricted in usefulness to the cleansing of resistant greasy or oily surfaces with the assistance of the mechanical action of an abrasive.

The present invention is for a soap paste which is free from these irritating and other ,objectionable features, and thereby its use is extended'to purposes for which the soap pastes known to the art have failed. It possesses superior cleaning properties and collects and retains the removed dirt.- The ab-- sence of coarse and gritty material renders it available for use on tenderskin, such as the forearm, etc. No prelimlnary solvent .out scratching.

- comrosrrron or soar PASTE.

Application filed August 27, 1927. Serial no aiaooi.

treatment is needed to remove ,rosins, grease,

oil or tar stains. Painted or japanned or enameled surfaces may be cleaned by it with- Textiles, glass or metal surfaces stained by tar are cleaned by its solvent action on the tar: If desired, -a suitable antiseptic, for instance, phenolic bodies, may be added, which feature will be of further advantage to mechanical workers who are frequently receiving minor in uries, and to physlcians .or surgeons, hospltal workers, etc.

Avery decided advantage possessed by the composition is that tarry or oily material is removed along with the soap paste as an emulsion from which the tar is not precipitated upon dilution, leavin the soiled article clean andwithout an-oily iilm. Thisc'leansing action is largely dependent upon the solvent, an ester of an organic acid, present in the soap paste, Goal tar naphtha, petroleum -naph.-.

tha, turpentine and the like have been'proposed as solvents in soap compositions but all grease solvents so far usedThaVe been objec-,

tionable from either their odor or their volatility. The latter property results in a loss of the solvent from the soap by evaporation. The solvents used in the present invention are either odorless or possess a pleasant odor and they are sufiiciently high boiling to be practically non-volatile. They possess'high solvent properties for oils, greases, tars and the like.

- The soap paste or cream comprises principally an intimate blend of an ester of an alipha'tic alcohol andan organic acid (the solvent), a soap and water mixture, a colloidal clay and a mineral, filler of high absorptive powers. J

The ester may bedibutyl phthalate, diethyl phthalate, diethyl maleate, diethy1 fumarate or others which exert a solvent action on oils, greases and tars. The soap used may be from any good grade of commercial material made by saphonifying suitable fatty acidsm with alkali. Liquid soaps of the type common in the trade may also be used. A portion of the soap used may be rosin soap. The colloidal clay may be the ordinary benonite of commerce. The preferable mineral fill'e'rf is infusorial earth or ki'eselguh'r but other fillers with absorptive properties such as magnesia, calcium carbonate, wood flour and the like may be used without departing from the scope and spirit of the invention.

' If antiseptic action is desired, phenolic bodies such as cresol or other antiseptic materials may be added. An abrasive such as. finely divided pumice may be added to 1mprove the body of the paste or cream and likewise decrease the cost of the product. A coarse mineral filler such as coarse pumice, sand, etc. may be added for certain purposes,

but the improved cleaning properties of the composition described make such coarse fillers unnecessary and even undeslrable for most purposes. Colors and perfumes may be added to the composition as desired.

As illustrations of operative soap pastes, the following compositions are given as examples but considerable variation in the quantities of components may be made with- Example 1.

Parts I a by weight.

Dry soap 120 Colloidal clay 190 Infusorial earth 150 Dibutyl phthalate 100 Water 4.40

out departing from the spirit and scope of the invention. I

The soap is dissolved in the water, the

dibutyl phthalate added and the clay and in- In this case the soap is dissolved .in water, .the rosindissolved in the diethyl phthalate, the two solutions mixed with the addition of the caustic soda and the other materials then mechanically mixed in until the whole forms ahomogeneous mass.

E wample 3.

To the composition given under 2, add 10 parts of U, S. P. cresol and thoroughly incorporate. i

The finished mixes after'cooling are light colored and pasty in consistency but will not flow from the container-without the application of pressure. The especial proportions of ingredients given may be widely varied, depending on the exact consistency desired.- The essentials are the ester, soap, water and colloidal clay and these materials alone give a product which is a satisfactory cleanser. It is, however, rather slimy and an absorptive filler such as infusorial earth gives a body which has a better feel and therefore I more readily salable. The use of rosin soap as a substitute for part of the soap chips is not essential but is economical and does not detract from the value of the product. The

use of colors, perfumes, pumice, etc. is to give characteristics which cater to certain ideas of the consuming public:

The soap paste is especially useful in machine shops, garages, manufacturing plants, pain't shops, to automobile drivers, in the household, and in general in all places where stainingor greasy materials, which are dissolved by a soap solution or by an oil, are encountered.

By a fatty acid soap as usedin the claims, it is intended to include the alkali salts of the higher saturated or unsaturated aliphatic acids of animal or vegetable origin, such as oleic, stearic, palmitic, ricinoleic, etc, the

acids of rosin, cottonseed oil, linseed oil,

rapeseed oil, tung oil, China wood oil, whale oil, and the like.

By colloidal clay it is intended to include the ordinary types of commercial colloidal.

clays such as clayoi'd, bentonite, etc. and other emulsifiable clays.

Claims:

1. A soap paste, comprising a mixture of an ester of a dibasic organic acid, water, neutral fatty acid soap and colloidal clay which has the property of swelling by absorption of a large volume of water.

,2. A soap paste, comprising a mixture of i dlbutyl phthalate, water, neutral fatty acid soapandcolloidal clay which has the property of swelling by absorption of a large volum'eofwater. I V

3. A soap paste,'comprising a mixture of dibutyl'phthalate, water, neutral fatty acid soap, colloidal claywhich has the property of swelling by absorption of a large volume of water and infusorial earth.

4. A soap paste, comprising a mixture of dibutyl phthalate, water, neutral fatty acid soap, colloidal clay which has the property of swelling by absorption of a large volume of water, infusorial earth and pumice, '5. A soap paste, comprising a mixture of dibutyl phthalate, water, neutral fatty acid soapa part of which is'rosin soap, colloidal clay which has the property of swelling by absorption of a large volume of water and infusorial earth. l

In testimony whereof, we hereby affix our signatures.

' VJOHNMORRIS wlEiss.

CHARLES RAYMOND DOWNS. 

